c321d61c3b58b29cb33b76e6a60f61bcb04995c6daf55143d7c6eeddffab24be

Analysis

max time kernel
142s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 03:47

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General

Target

2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe
Size

50KB
MD5

a91c515633e4c39724730368f0132f68
SHA1

aa4b974cdbc22a47290b3123a978be58ef3842f5
SHA256

c321d61c3b58b29cb33b76e6a60f61bcb04995c6daf55143d7c6eeddffab24be
SHA512

c71f1a2fb3f9d0f98735e13fd1c489ff719287349fc00b85e59d6c52b25deaabd94645a7be7af88a13d57f1bfc38b333343c4de0e038ac3e1a92d5552ed129cd
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojkRaB:V6a+pOtEvwDpj4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023262-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023262-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5392	asih.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 5392	5004	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	94
PID 5004 wrote to memory of 5392	5004	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	94
PID 5004 wrote to memory of 5392	5004	2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_a91c515633e4c39724730368f0132f68_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5392

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4472 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:4560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
51KB

MD5
c8fb3748493893404a835301f4370401

SHA1
b30d0759a3b25c96fce77abb19bb74b908e372a4

SHA256
ed1029bcb2119fb21f0742e6da903871ea9767aea54c256b28fe1aade52b9d04

SHA512
01beff1139a847bf526b3befefb14fbe14394a4e7a9563b064fee6fcabbf3e7ae3de3aac3887b561b8caf35a4c01453902947cd00b7085a855be135146037020

Download Submit
memory/5004-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5004-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5004-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download